diff --git a/vignettes/nested-forecasting.Rmd b/vignettes/nested-forecasting.Rmd
index 64058570..98f2ecb9 100644
--- a/vignettes/nested-forecasting.Rmd
+++ b/vignettes/nested-forecasting.Rmd
@@ -71,7 +71,7 @@ library(tidyverse)
 library(timetk)
 ```
 
-```{r. echo = FALSE}
+```{r, echo = FALSE}
 library(modeltime)
 library(tidymodels)
 library(dplyr)
diff --git a/vignettes/parallel-processing.Rmd b/vignettes/parallel-processing.Rmd
index 430ccd33..5347fb5a 100644
--- a/vignettes/parallel-processing.Rmd
+++ b/vignettes/parallel-processing.Rmd
@@ -62,7 +62,7 @@ library(tidyverse)
 library(timetk)
 ```
 
-```{r. include = FALSE}
+```{r, include = FALSE}
 # Machine Learning
 library(modeltime)
 library(tidymodels)
diff --git a/vignettes/recursive-forecasting.Rmd b/vignettes/recursive-forecasting.Rmd
index 8dfc0b51..b31b960a 100644
--- a/vignettes/recursive-forecasting.Rmd
+++ b/vignettes/recursive-forecasting.Rmd
@@ -65,7 +65,7 @@ library(tidyverse)
 library(timetk)
 ```
 
-```{r. include = FALSE}
+```{r, include = FALSE}
 library(modeltime)
 library(tidymodels)
 library(dplyr)